Exam 40: Physiology, Homeostasis, and Temperature Regulation

The hypothalamus serves in part as an integrated thermoregulatory center defining an organism's response to changes in its thermal environment. Because the hypothalamus normally serves to produce metabolic responses that reverse the direction of environmental temperature change, the control it exerts is termed

Use the following to answer questions: Refer to the graph below. -The "winter fish" has a Q₁₀ of _______; the "summer fish" has a Q₁₀ of _______.

Measurements of a fish's Q₁₀ made during the summer often do not accurately predict its actual metabolic rate as measured in the winter, because the animal has _______ to the seasonal change.

The first cool breeze of autumn is at a temperature that will feel warm in the middle of winter because

As the environmental temperature in a closed, empty chamber increases (up to 25°C), the metabolic rate of an ectotherm _______ and that of an endotherm _______.

Use the following to answer questions : Predict the probable metabolic response of a mam­mal exposed to a 3°-5°C environmental temperature change from the list below. -The environmental temperature begins at the upper critical temperature and decreases below that point.

The linings of many hollow organs consist of _______ tissue.

Which of the following statements about heat exchange is false?

Which of the following is the most important and most general characteristic of endotherms adapted to cold climates compared with those adapted to warm climates?

The elephant is better adapted to tropical habitats than to cold climates because of its

Which of the following characterizes the protein elastin?

The human immune system responds to an infection by producing _______, which cause many of the symptoms of sickness such as fever.

A squirrel that metabolically maintains its internal temperature during the summer but hibernates during the winter is a(n)

A high school cross-country runner ignores her coach's rule about drinking water and taking breaks regularly. She overheats and collapses. The paramedics that come to her aid will

Which of the following organ systems is not involved in the maintenance of homeostasis in humans?

In terms of the predominant source of heat that determines its body temperature, an animal can be classified as an endotherm, ectotherm, or _______.

In mammals, most nonshivering heat production occurs in the adipose tissue called _______.

Why is it important for an organism to maintain homeostasis?

The strength of skin and of the connections between bones is due to the protein

Which of the following statements about tissues is false?